The dialogue continues on developments in weapons technology and the challenges they present for arms control. Benjamin King and Glenn McDonald explain how the modular design of weapons systems complicates weapons marking, record -keeping, and tracing. They also examine the issues raised by the conversion of replica firearms into viable weapons; and they consider how new weapons technology presents opportunities for improved stockpile management. This is the second part of a two-part podcast that covers a series of discussion papers being presented in October 2014 at the UN First Committee on Disarmament and International Security.

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